Brake shoe



3fm- Z i947- R. R. BIRCHFIELD BRAKE sHoE Original Filed Jan. 12. 1944 INVEN TOR.

, ATTORNEYSQ Patented `ian. 21, 1947 BRAKE SHOE Roy R. Birchleld,Shreveport, La.

Original application 518,006. Divided January 12, 1944, Serial No. andthis application November 9, 1944, Serial No. 562,626

1 Claim. 1

The device forming the subject matter of this application is a brakeshoe. The present application discloses an invention divided out of myformer application for Letters Patent on a Hydraulic brake, SerialNumber 518,006, filed January 12, 1944 and issued as Patent No.2,389,405 on Nov. 20, 1945.

The invention aims to provide a brake shoe having a lining of novelform, a carrier of novel form for the lining, and novel means forassembling the lining with the carrier.

Within the scope of what is claimed, changes in the embodiment of theinvention herein disclosed may be made without departing from the spiritof the invention.

In the drawing:

Figure 1 shows, in side elevation, a device wherein the presentinvention has been incor- Dorated.

Figure 2 is a section on line 2 2 of Figure 1.

The letter F designates a fixed drum. The fixed drum F includes a backplate I. The back plate l is adapted to be secured xedly, by anyappropriate means (not shown) to any accessible part of a vehicle. Theback plate l is provided at its periphery with a laterally projectingannular flange 3. The numeral 6 designates the brake shoe.

The brake shoe 6 comprises oppositely disposed angle members 6l,including transverse flanges 60, and inwardly projecting flanges 62. Onthe outer surfaces of the flanges 50 is disposed a 1ining l, havinginwardly extended tongues 63, disposed between the iianges 52 of theshoe 6. Securing elements 54, such as rivets, connect the ilanges 62 andbind the tongues 63 between them. The linings 'l and their tongues 63may be formed by folding a piece of material as shown in Figure 2.

`(Cl. ISS- 250) A lining 4 is secured to the inner surface of the flange3 on the back plate I. A drum D is secured to the wheel of a vehicle(not shown). The drum D includes a lateral flange I8, received betweenthe linings l and 4. The ilange 3 and the lining 4 form a dust guard.

My application hereinbefore identified shows that the brake shoe 6 maybe made in two semicircular parts. Each part of the brake shoe 6 hasinwardly projecting fingers 8.`r The fingers S are slidably received inkeepers 9, secured to the back plate I from the xed drum F. The drum Dis carried by an axle A passing rotatably through the xed drum F. Anysuitable means may be provided for expanding the brake shoe S. Theexpanding means forms no part of the present application.

The brake shoe structure depicted in Figure 2 of the drawing is simple,durable, inexpensive and eiiective.

What is claimed:

A brake shoe comprising opposed angle members having inwardly extendedflanges and laterally arcuate anges, the arcuate flanges on the twomembers being extended in opposite directions, and a lining of stripmaterial having inwardly directed side folds cooperating with theintermediate portion of the strip material to form a lining of doublethickness supported on the arcuate flanges and of a width equal to thecombined width of said flanges. the marginal portions of the strip beingparallel and cooperating to provide a continuous longitudinal tongueextending between the inwardly extending flanges on the angle member,and means extending through said inwardly extended ilanges and thetongue portion of the strip for binding the same together.

ROY R. BIRCI-IFIELD.

